This video explains how to choose the correct pipe plug by clearing up the variety features of different models in terms of the pipe sizes.br br Multiple Size Model and Single Size Model are both used for sealing or testing the pipeline. However, there are some criteria to know the suitable model for your application. It’s mainly about the quantity of the pipes to be sealedtested and whether the works would be going on in the same time or no. br br You can contact PlugCo team to assist you in choosing the suitable model(s) for your application.